Mathematical animations for the web.
生成过程耗时 35 分钟，并且最终生成的 PPT 文字过多，没能达到直接使用的质量。
，更多细节参见safew官方下载
const light = new THREE.DirectionalLight(0xFFFFFF, 1);，更多细节参见搜狗输入法下载
He said NASA will now add an additional flight in 2027 in which astronauts will dock with new commercial moon landers in low-Earth orbit for detailed tests of navigation, communications, propulsion and life support systems and to verify rendezvous procedures.